CN106604295A - User service request method and mobility management entity device - Google Patents

Abstract

The invention discloses a user service request method and a mobility management entity device. The user service request method comprises the steps that: an mobility management entity MME instructs a service base station of user equipment (UE) to establish radio resource control RRC connection with the UE according to a service request sent by the UE, and instructs a service gateway SGW of the UE to modify bearer of the UE according to a context of the UE; and if the MME receives a modify bearer failure response returned by the SGW, the MME instructs the SGW to create a default bearer for the UE, and instructs the SGW to modify the default bearer of the UE according to the context of the UE after confirming the successful creation. The user service request method and the mobility management entity device solve the problems that message exchange falls into a closed infinite loop and the service request fails all the time during the user service requesting process in the prior art.

Description

A kind of user service requesting method and Mobility Management Entity device

Technical field

The present invention relates to communication technical field, more particularly to a kind of user service requesting method and mobile management Entity apparatus.

Background technology

Under LTE (Long Term Evolution, Long Term Evolution) framework, as shown in figure 1, UE (User Equipment, alternatively referred to as user equipment, terminal) pass through ENB (evolved Node B, evolution base station) Attaching process is initiated to LTE network, after attachment success, UE just can access network.Make when UE interrupts With Network, in order to save the bandwidth resources of LTE, ENB is directed to immediately the UE to MME (Mobility Management Entity, Mobility Management Entity) initiate S1 releasing requests (S1UE Context Release Request), carry for disconnecting signaling connection and release user.MME sends releasing bearing request (Release Access Bearers Request) to SGW (Serving GateWay, gateway) please The S1-U carryings of release UE correlations are asked, the carrying release response (Release of SGW returns is being received Access Bearers Response) release UE context commands (S1UE Context Release are sent afterwards Command) S1 releases are carried out to ENB, as shown in the step 1 in Fig. 2 to step 4, MME exists The UE contexts release for receiving ENB transmissions completes (S1UE Context Release Complete) and disappears S1 releases (S1Release) is confirmed after breath.UE with ENB RRC (Radio Resource Control, Wireless heterogeneous networks) connection disconnection, signaling connection disconnections of the UE between MME and ENB, such as Fig. 2 In step 5 shown in.When UE needs to carry out business of networking again, ENB sends to MME and is packaged with this Initial UE message (the S1-AP of UE service request informations:Initial UE Message).MME is received Backward ENB initiates initial context and sets up request (S1-AP Initial Context Setup Request) activation S1 is carried, as shown in the step 1 in Fig. 3 to step 3.MME receive ENB return it is initial on Hereafter it is successfully established the backward SGW of message (S1-AP message Initial Context Setup Complete) Send modification and carry request (Modify Bearer Request).MME receives the modification of SGW returns and holds After carrying success response (Modify Bearer Response), the UE can carry out the business of surfing the Net etc. again, such as Step 4 in Fig. 3 is to shown in step 6.

But when LTE large scale experiments net is tested, occur in that after the S1 releases of the UE, in server When long ping operations are initiated the UE at end, i.e., the IP address to UE on the server of network side sends out IP bags, The unsuccessful situation of UE service requests.Again due to the server long ping UE terminals, UE again can be again Secondary initiation service request, and each service request procedure is the same as the first time, the service request of UE is all the time Failure, and constantly repeat above-mentioned flow process, cause UE and network form the closed loop endless loop of interacting message, The interface-free resources of substantial amounts of ENB are occupied, while UE all the time cannot access network.

Therefore, the interacting message for how solving user service request process in above-mentioned scene is absorbed in closed loop endless loop And the problem of service request failure all the time, it is urgently industry research.

The content of the invention

The method and Mobility Management Entity device of a kind of user service request are embodiments provided, is used Closed loop is absorbed in the interacting message for solving appearance in user service request process present in prior art extremely to follow The problem of ring and service request failure all the time.

The user service requesting method that one embodiment of the present of invention is provided, including：

The service request that Mobility Management Entity MME sends according to user equipment (UE), indicates the UE Serving BS set up radio resource control RRC with the UE and be connected, and indicate the service network of the UE Close the carrying of SGW UE according to the contextual modifications of the UE；

If the MME receives the modification carrying failure response that the SGW is returned, it indicates that described SGW is that the UE creates default bearing, and is confirming to indicate the SGW according to described after creating success The default bearing of UE described in the contextual modifications of UE.

The Mobility Management Entity device that one embodiment of the present of invention is provided, including：

First indicating member, for the service request sent according to user equipment (UE), indicates the UE's Serving BS is set up radio resource control RRC and is connected with the UE；

Second indicating member, for indicating the gateway SGW of the UE according to the upper and lower of the UE The carrying of the text modification UE；And unsuccessfully ring for carrying in the modification for receiving the SGW returns At once, indicate that the SGW is that the UE creates default bearing, and confirming to indicate institute after creating success State the default bearing of SGW UE according to the contextual modifications of the UE.

User service request process in the above embodiment of the present invention, the service that MME sends according to UE Request, indicates that the serving BS of UE is set up RRC and is connected with UE, and indicates the SGW of UE according to UE Contextual modifications UE carrying, if receive SGW return modification carry failure response, it indicates that SGW is that UE creates default bearing, and contexts of the SGW according to UE is indicated after confirming to create success The default bearing of modification UE.As can be seen that in user service request process, if MME is received The modification that SGW is returned is carried after failure response, and the serving BS of the not oriented UE initiates the upper of the UE Hereafter discharge, but the request for creating default bearing is initiated to SGW, when SGW is received acquiescence is created Carry the context after success response further according to the UE and initiate modification carrying request, now have in SGW The default bearing of the UE, therefore, it is possible to return modification success response is carried, so as to user service asks flow process Success.The embodiment of the present invention propose user service requesting method solve when user service request fails Happen suddenly a large amount of message between UE and serving BS, serving BS and MME, MME and SGW, message Send back and forth and cannot stop the problem of endless loop, and can make the single treatment of user's se ce request procedure into Work(, consumption of network resources is few, and UE can again carry out other business operations such as surf the Net, and improve user's body The property tested.

Description of the drawings

Technical scheme in order to be illustrated more clearly that the embodiment of the present invention, below will be to institute in embodiment description The accompanying drawing that needs are used is briefly introduced, it should be apparent that, drawings in the following description are only the present invention's Some embodiments, for one of ordinary skill in the art, in the premise for not paying creative labor Under, can be with according to these other accompanying drawings of accompanying drawings acquisition.

Fig. 1 is the non-roaming configuration diagrams of LTE；

Fig. 2 is the S1 release handling process schematic diagrams of UE in prior art；

Fig. 3 is that UE initiates service request handling schematic flow sheet in prior art；

Fig. 4 is the schematic flow sheet that user service request unsuccessfully causes message reciprocation cycle in prior art；

Fig. 5 is user service requesting method schematic flow sheet provided in an embodiment of the present invention；

Fig. 6 is created to the initial context that MME is returned for the serving BS in the embodiment of the present invention and successfully disappeared The form schematic diagram of breath；

Fig. 7 is that the form of the modification bearing request message that MME sends to SGW in the embodiment of the present invention shows It is intended to；

Fig. 8 is the message header form schematic diagram that default bearer request message is created in the embodiment of the present invention；

Fig. 9 is the schematic flow sheet of user service requesting method concrete application provided in an embodiment of the present invention；

Figure 10 is the structural representation of Mobility Management Entity device provided in an embodiment of the present invention.

Specific embodiment

In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing to this It is bright to be described in further detail, it is clear that described embodiment is only present invention some embodiments, Rather than the embodiment of whole.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing Go out all other embodiment obtained under the premise of creative work, belong to the scope of protection of the invention.

In the test of LTE large scale experiments net, after occurring in that the S1 releases of UE, by network side in clothes Business device end is done after the operation of long ping terminal UEs, the problem that the business of networking of UE cannot be recovered all the time, is led to In-depth study and location finding are crossed, after carrying out initiating long ping operations to the UE in server end, by Carry in the P58 of the UE of PGW (PDN GateWay, bag data gateway) side and be in activated state, ping Signaling can issue SGW from PGW, and the S1-U of the SGW sides UE is carried and is in deactivated state, Therefore SGW is after the ping signaling messages for receiving the UE, it is believed that the S1-U of the UE is carried and PGW Side is inconsistent, carries out resource and checks that consistency check is processed, so as to carry out the S1-U of the SGW sides of the UE The release of abnormal resource.Therefore, in the case where UE sends service request, MME receives serving BS Initial context is successfully established after response, is initiated modification to SGW and is carried request, and SGW receives modification Carrying checks that this of the UE is carried on SGW sides and does not exist after asking, so modification can only be returned Failure response is carried, as shown in the step 1 in Fig. 4 to step 6.MME receives the modification of SGW and holds After carrying failure response, S1 release flow processs, the failure of UE service requests, the step 7 in such as Fig. 4 are initiated immediately With shown in step 8.And after S1 releases flow process is completed, UE initiates again se ce request procedure, service please Ask process and the step 1 above shown in Fig. 4 of flow process completely the same to the flow process described in step 8, therefore take Business request still fail, failure cause also with it is consistent above.UE constantly initiates se ce request procedure, so Afterwards constantly service request procedure is then constantly initiated again, again constantly in network side handle failure Processing failure, not only causes UE and the closed loop endless loop back and forth of internetwork interacting message, occupies a large amount of Internet resources, and cause user to obtain network service all the time, have impact on the experience property of terminal use.

In order to solve problem above, the application proposes a kind of user service requesting method and Mobility Management Entity Device.

In embodiments of the present invention, in user service request process, when MME receives SGW modifications It is not the context release that the UE is initiated to serving BS, but rather indicate that SGW when carrying failure response Default bearing is created for the UE, and is confirming to indicate the SGW according to the UE after creating success Contextual modifications described in UE default bearing, when receive SGW create default bearing success response after Initiate modification and carry request further according to the context of the UE, due to now in SGW having created this The default bearing of UE, therefore, it is possible to return modification success response is carried, so that user service request stream Cheng Chenggong, it is to avoid when the modification for receiving SGW returns carries failure response, MME is initiated on UE Hereafter release causes UE with the endless loop of network information interaction and is unable to the problem of access network all the time.

The embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.

Fig. 5 shows the schematic flow sheet of user service requesting method provided in an embodiment of the present invention, the flow process Comprise the steps：

Step 501：The service request that MME sends according to UE, indicates serving BS and the institute of the UE State UE and set up RRC connections, and indicate the contextual modifications institutes of the SGW according to the UE of the UE State the carrying of UE.

Specifically, UE sends service request to serving BS, and the UE can be that mobile phone etc. has channel radio The equipment of telecommunication function.The service request of the UE for receiving is encapsulated in initial UE message by serving BS (S1-AP:Initial UE Message) in and be sent to MME.MME is received comprising service request Initial context is initiated after initial UE message to serving BS set up request (S1-AP Initial Context Setup Request) activation S1 carryings, it is connected for indicating that the serving BS of UE sets up RRC with UE.

MME is successfully established message (S1-AP message in the initial context for receiving serving BS return Initial Context Setup Complete) after to SGW send modification carry request (Modify Bearer Request), the carrying of the UE is changed according to the request for indicating SGW.

Wherein, the initial context that serving BS is returned to MME create success message form as shown in fig. 6, Wherein, it is the E-RAB ID (wireless access of evolution in IE/Group Name (information unit/group name) Carry mark), Transport Layer Address (transport Layer address) and GTP-TEID (GPRS tunnels Agreement-Tunnel Identifier) field in contain the serving BS be request service UE set up S1-U sides Information.

Specifically, MME sends modification bearing request message to SGW, and the modification bearing request message is used Carried and/or user plane bearer according to the signaling plane that the contextual information of UE changes UE in instruction SGW. MME receives SGW and carries request response according to the modification that the modification bearing request message is returned, The modification carries request response to be used to indicate bearing modification success or failure.

Wherein, MME sends to SGW modification bearing request message form as shown in fig. 7, wherein, The initial context establishment that serving BS returns to MME is contained in S1eNodeB F-TEID fields The entrained serving BS is the information of the S1-U sides of the UE foundation of request service in success message.

Step 502：If the MME receives the modification carrying failure response that the SGW is returned, Indicate the SGW and create default bearing for the UE, and confirming to indicate the SGW after creating success The default bearing of UE according to the contextual modifications of the UE.

Specifically, MME is received after the modification carrying failure response that the SGW is returned, and is sent out to SGW Establishment default bearer request message is sent, the establishment default bearer request message is used to indicate that SGW is the UE Create signaling plane to carry and user plane bearer.MME receives the SGW according to establishment default bearer request The establishment default bearer request response message that message is returned, the establishment default bearer request response message is used to refer to Show load creating success or failure.

Specifically, the modification carries failure response and can be because that there is no the UE in the SGW holds Carry or the UE carries disappearance etc. and causes SGW to be normally carried out changing the reason for carrying operation, so as to Return MME modifications and carry failure response.

For example, scene described below can cause SGW to return modification carrying failure response：

In the test of LTE large scale experiments net, after UE carries out S1 releases, the UE is entered in server end Row initiates long ping operations.Activated state is in because the P58 of the UE of PGW sides is carried, ping letters Order issues SGW from PGW, and the S1-U of the SGW sides UE is carried and is in deactivated state, therefore SGW After the ping signaling messages for receiving the UE, it is believed that the S1-U of the UE carries inconsistent with PGW sides, Carry out resource and check that consistency check is processed, so as to carry out the S1-U abnormal resource of the SGW sides of the UE Release.In the case where UE sends service request, MME receives the foundation of serving BS initial context After success response, initiate modification to SGW and carry request, and SGW is received to change carried and check after request It is carried in SGW to the UE and does not exist, therefore, SGW returns modification and carries failure response.

Specifically, TEIDC (the Tunnel Endpoint of the SGW in default bearer request message are created Identifier, Tunnel End Point Identifier) value be 0.The TEIDC is for informing SGW for being somebody's turn to do for 0 UE creates default bearing, as the UE assignment signallings resource and carrying service surface resource, rather than finds The carrying of existing UE simultaneously updates.If the TEIDC can not create silent for 0, SGW to the UE Recognize carrying, return and create default bearing failure response message, so as to work as MME send that modification carries again please When asking, due to the not no default bearing of the UE in SGW, so still cannot change to carry successfully ringing Should.

Specifically, the message header form for creating default bearer request message is as shown in figure 8, wherein Tunnel Endpoint Identifier (1st Octet), Tunnel Endpoint Identifier (2st Octet), Tunnel Endpoint Identifier (3st Octet) and Tunnel Endpoint Identifier (4st Octet) are in the message SGW Tunnel End Point Identifier TEIDC, the user service that above-mentioned parameter is proposed in the embodiment of the present invention please Value in method is asked to be 0.

Specifically, if MME receive be SGW return modification carry success response, can be more States of the new UE in the MME is registration and connected state.

Specifically, the MME sends modification bearing request message to SGW, and the modification carries request and disappears Contextual information comprising UE in breath, the modification bearing request message is used to indicate SGW according to UE's The signaling plane default bearing and/or user plane default bearing of contextual information modification UE；

MME receives SGW and is disappeared according to the modification carrying request response that the modification bearing request message is returned Breath, the modification carries request response to be used to indicate bearing modification success or failure.

By above description as can be seen that the embodiment of the present invention works as MME in user service request process When receiving SGW modification carrying failure responses, indicate that SGW is that UE creates default bearing, confirming to create Build up after work(and indicate that SGW, according to the default bearing of contextual modifications UE of the UE, receives SGW Create the context after default bearing success response further according to the UE and initiate modification carrying request again.Pass through Said process, when MME sends modification to SGW again carries request, due to creating in now SGW The default bearing of the UE has been built, therefore SGW can return modification and carry success response to MME, from And cause user service request flow process success, it is to avoid return when MME receives SGW in prior art When modification carries failure, MME initiates to believe between UE and network caused by the release of UE contexts to serving BS Cease interaction endless loop and be unable to the problem of access network all the time.

In order to be more clearly understood that above-mentioned user service request flow process, below based on the flow process shown in Fig. 5, Describe the embodiment of the present invention implements flow process.

Fig. 9 shows user service requesting method provided in an embodiment of the present invention flow process in a particular application. As illustrated, in step 1, UE to serving BS sends service request information (NAS:Service Request), In step 2, the initial UE message (S1-AP that serving BS is encapsulated in the service request information:Initial UE Message it is transmitted in) in MME, step 3, MME receives backward serving BS and initiates on initial Hereafter set up request (S1-AP Initial Context Setup Request) activation wirelessly to carry with S1, step In 4, MME receives the initial context of serving BS return and is successfully established message (S1-AP message Initial Context Setup Complete), now the radio bearer of the UE is set up, in step 5, MME Modification being sent to SGW and carrying request (Modify Bearer Request), in step 6, MME is received The modification that SGW is returned carries failure response (Modify Bearer Response), in step 7, the MME Initiate to create default bearer request to SGW, indicate the SGW for the UE and create default bearing, step In 8, it is the UE assignment signallings face resource and user plane that SGW is received after the establishment default bearer request Resource, creates and return after default bearing success establishment default bearing success response, and in step 9, MME connects Receive and initiate modification to SGW again after this response and carry request, in step 10, due in now SGW There is the default bearing of the UE, therefore modification is returned to MME after modification default bearing success and carry into Work(is responded, so as to the user service under the scene is asked successfully.

Can be seen that in embodiments of the invention scene by above-mentioned flow process, MME sends according to UE Service request, the serving BS for indicating UE is set up RRC and is connected with UE, and indicates the SGW of UE According to the carrying of contextual modifications UE of UE, if the modification for receiving SGW returns carries failure response, Then indicate that SGW is that UE creates default bearing, and indicate SGW according to UE's after confirming to create success The default bearing of contextual modifications UE.The user service requesting method that the embodiment of the present invention is proposed is solved During user service request failure endless loop and asking for access network is unable to all the time in UE and inter-network messages interaction Topic, and user's se ce request procedure single treatment success can be made, consumption of network resources is few, improves use Family experience property.

Based on identical technology design, the embodiment of the present invention additionally provides a kind of device, on the device is executable State embodiment of the method.Device provided in an embodiment of the present invention is as shown in Figure 10.

It is the structural representation of Mobility Management Entity device provided in an embodiment of the present invention referring to Figure 10, should Device may include：First indicating member 1001, the second indicating member 1002, wherein：

First indicating member 1001, for the service request sent according to user equipment (UE), indicates described The serving BS of UE is set up radio resource control RRC and is connected with the UE；

Second indicating member 1002, for indicating the gateway SGW of the UE according to the UE's The carrying of UE described in contextual modifications；And for receiving the modification carrying mistake that the SGW is returned When losing response, indicate that the SGW is that the UE creates default bearing, and refer to after confirming to create success Show the default bearing of SGW UE according to the contextual modifications of the UE.

Specifically, the second indicating member 1002 sends modification bearing request message to SGW, and the modification is carried Request message is used to indicate that SGW is carried and/or used according to the signaling plane that the contextual information of UE changes UE Family face carries；Second indicating member 1002 receives SGW according to repairing that the modification bearing request message is returned Change carrying request response, the modification carries request response to be used to indicate bearing modification success or lose Lose.

Specifically, the second indicating member 1002 receive SGW return modification carry failure response when, Send to SGW and create default bearer request message, the establishment default bearer request message is used to indicate SGW Signaling plane resource and user plane resource are created for UE；Second indicating member 1002 receives SGW according to described The establishment default bearer request response message that default bearer request message is returned is created, the establishment default bearing please Response message is sought for indicating load creating success or failure.

Specifically, the SGW created in default bearer request message that second indicating member 1002 sends Tunnel End Point Identifier TEIDC values be 0.

Specifically, second indicating member 1002 sends modification bearing request message, the modification to SGW Contextual information comprising UE in bearing request message, the modification bearing request message is described for indicating SGW changes the signaling plane default bearing and/or user plane default bearing of UE according to the contextual information of UE； Second indicating member 1002 receives SGW and carries request response according to the modification that modification bearing request message is returned Message, the modification carries request response to be used to indicate bearing modification success or failure.

In sum, in the above embodiment of the present invention, the service request that MME sends according to UE refers to The serving BS and UE for showing UE is set up RRC and is connected, and indicates the SGW of UE according to the upper and lower of UE The carrying of text modification UE, if the modification for receiving SGW returns carries failure response, it indicates that SGW is UE creates default bearing, and contextual modifications UE of the SGW according to UE are indicated after confirming to create success Default bearing.As can be seen that after the modification that MME receives SGW returns carries failure response, The request for creating default bearing is initiated to SGW, after SGW establishment default bearing success responses are received Modification carrying request is initiated further according to the context of the UE, the acquiescence for now having the UE in SGW is held Carry, therefore, it is possible to return modification success response is carried, so as to user service asks flow process success, solve UE is with the endless loop of network information interaction and is unable to asking for access network all the time during user service request failure Topic, and user's se ce request procedure single treatment success can be made, consumption of network resources is few, improves use Family experience property.

The present invention is produced with reference to method according to embodiments of the present invention, equipment (system) and computer program The flow chart and/or block diagram of product is describing.It should be understood that can by computer program instructions flowchart and / or block diagram in each flow process and/or square frame and flow chart and/or the flow process in block diagram and/ Or the combination of square frame.These computer program instructions can be provided to general purpose computer, special-purpose computer, embedded The processor of formula datatron or other programmable data processing devices is producing a machine so that by calculating The instruction of the computing device of machine or other programmable data processing devices is produced for realizing in flow chart one The device of the function of specifying in individual flow process or one square frame of multiple flow processs and/or block diagram or multiple square frames.

These computer program instructions may be alternatively stored in can guide computer or other programmable datas process to set In the standby computer-readable memory for working in a specific way so that in being stored in the computer-readable memory Instruction produce and include the manufacture of command device, command device realization is in one flow process or multiple of flow chart The function of specifying in one square frame of flow process and/or block diagram or multiple square frames.

These computer program instructions also can be loaded in computer or other programmable data processing devices, made Obtain and series of operation steps is performed on computer or other programmable devices to produce computer implemented place Reason, so as to the instruction performed on computer or other programmable devices is provided for realizing in flow chart one The step of function of specifying in flow process or one square frame of multiple flow processs and/or block diagram or multiple square frames.

, but those skilled in the art once know base although preferred embodiments of the present invention have been described This creative concept, then can make other change and modification to these embodiments.So, appended right will Ask and be intended to be construed to include preferred embodiment and fall into having altered and changing for the scope of the invention.

Obviously, those skilled in the art can carry out various changes and modification without deviating from this to the present invention Bright spirit and scope.So, if the present invention these modification and modification belong to the claims in the present invention and Within the scope of its equivalent technologies, then the present invention is also intended to comprising these changes and modification.

Claims (10)

1. a kind of method that user service is asked, it is characterised in that the method includes：

The service request that Mobility Management Entity MME sends according to user equipment (UE), indicates the UE Serving BS set up radio resource control RRC with the UE and be connected, and indicate the service network of the UE Close the carrying of SGW UE according to the contextual modifications of the UE；

If the MME receives the modification carrying failure response that the SGW is returned, it indicates that described SGW is that the UE creates default bearing, and is confirming to indicate the SGW according to described after creating success The default bearing of UE described in the contextual modifications of UE.

2. the method for claim 1, it is characterised in that the SGW of the instruction UE is according to institute The carrying of UE described in the contextual modifications of UE is stated, including：

The MME to the SGW sends modification bearing request message, the modification bearing request message For indicate the SGW carried according to the signaling plane that the contextual information of the UE changes the UE and/ Or user plane bearer；

The MME receives the SGW please according to the modification carrying that the modification bearing request message is returned Response message is sought, the modification carries request response to be used to indicate bearing modification success or failure.

3. the method for claim 1, it is characterised in that the instruction SGW is described UE creates default bearing, including：

The MME sends to the SGW and creates default bearer request message, the establishment default bearing Request message is used to indicate that the SGW creates signaling plane and carries and user plane bearer for the UE；

The MME receives the SGW and is write from memory according to the establishment that the establishment default bearer request message is returned Recognize carrying request response, the establishment default bearer request response message is used to indicate load creating success Or failure.

4. method as claimed in claim 3, it is characterised in that the establishment default bearer request message In SGW Tunnel End Point Identifier TEIDC values be 0.

5. the method for claim 1, it is characterised in that the instruction SGW is according to described The default bearing of UE described in the contextual modifications of UE, including：

The MME to the SGW sends modification bearing request message, the modification bearing request message In comprising the UE contextual information, the modification bearing request message be used for indicate the SGW roots The signaling plane default bearing and/or user plane acquiescence for changing the UE according to the contextual information of the UE is held Carry；

The MME receives the SGW please according to the modification carrying that the modification bearing request message is returned Response message is sought, the modification carries request response to be used to indicate bearing modification success or failure.

6. a kind of Mobility Management Entity device, it is characterised in that include：

First indicating member, for the service request sent according to user equipment (UE), indicates the UE's Serving BS is set up radio resource control RRC and is connected with the UE；

Second indicating member, for indicating the gateway SGW of the UE according to the upper and lower of the UE The carrying of the text modification UE；And unsuccessfully ring for carrying in the modification for receiving the SGW returns At once, indicate that the SGW is that the UE creates default bearing, and confirming to indicate institute after creating success State the default bearing of SGW UE according to the contextual modifications of the UE.

7. Mobility Management Entity device as claimed in claim 6, it is characterised in that described second refers to Show unit, specifically for：

Modification bearing request message is sent to the SGW, the modification bearing request message is used to indicate institute State that SGW is carried according to the signaling plane that the contextual information of the UE changes the UE and/or user plane is held Carry；

Receive the SGW to be disappeared according to the modification carrying request response that the modification bearing request message is returned Breath, the modification carries request response to be used to indicate bearing modification success or failure.

8. Mobility Management Entity device as claimed in claim 6, it is characterised in that described second refers to Show unit, specifically for：

Send to the SGW and create default bearer request message, the establishment default bearer request message is used It is that the UE creates signaling plane resource and user plane resource in the instruction SGW；

Receive the establishment default bearer request that the SGW is returned according to the establishment default bearer request message Response message, the establishment default bearer request response message is used to indicate load creating success or failure.

9. Mobility Management Entity device as claimed in claim 8, it is characterised in that the establishment is write from memory The Tunnel End Point Identifier TEIDC values of the SGW recognized in bearing request message are 0.

10. Mobility Management Entity device as claimed in claim 6, it is characterised in that described second refers to Show unit, specifically for：

Modification bearing request message is sent to the SGW, comprising described in the modification bearing request message The contextual information of UE, the modification bearing request message is used to indicate the SGW according to the UE's Contextual information changes the signaling plane default bearing and/or user plane default bearing of the UE；

Receive the SGW to be disappeared according to the modification carrying request response that the modification bearing request message is returned Breath, the modification carries request response to be used to indicate bearing modification success or failure.